Optical device



FIG. 1 is a rear-left-top perspective view of a first optical device embodying the new design;

FIG. 2 is a front-right-top perspective view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is a rear-left-top perspective view of a second optical device embodying the new design;

FIG. 10 is a front-right-top perspective view thereof;

FIG. 11 is a rear elevational view thereof;

FIG. 12 is a front elevational view thereof;

FIG. 13 is a right side elevational view thereof (with a left side substantially identical to the right side elevational view); and,

FIG. 14 is a bottom plan view thereof.

The broken lines in the figures are shown for the purpose of illustrating environmental matter and form no part of the claimed design. 

CLAIM The ornamental design for an optical device, as shown and described. 